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OPA686U Datasheet

  • OPA686U

  • Wideband, Low Noise, Voltage Feedback OPERATIONAL AMPLIFIER

  • 159.93KB

  • 15頁(yè)

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廬
OPA
6
86
OPA686
OPA
686
For most current data sheet and other product
information, visit www.burr-brown.com
Wideband, Low Noise,
Voltage Feedback OPERATIONAL AMPLIFIER
TM
FEATURES
q
HIGH BANDWIDTH: 250MHz (G = +10)
q
LOW INPUT VOLTAGE NOISE: 1.3nV/鈭欻z
q
VERY LOW DISTORTION: 鈥?0dBc (5MHz)
q
HIGH SLEW RATE: 600V/
碌
s
q
HIGH DC ACCURACY
q
LOW SUPPLY CURRENT: 12mA
q
HIGH GAIN BANDWIDTH PRODUCT:
1600MHz
q
STABLE FOR GAINS
鈮?/div>
7
APPLICATIONS
q
HIGH DYNAMIC RANGE ADC PREAMP
q
LOW NOISE, WIDEBAND,
TRANSIMPEDANCE AMPLIFIER
q
WIDEBAND, HIGH GAIN AMPLIFIER
q
LOW NOISE DIFFERENTIAL RECEIVER
q
VDSL LINE RECEIVER
q
ULTRASOUND CHANNEL AMPLIFIER
q
IMPROVED REPLACEMENT FOR THE
CLC425
A new external compensation technique can be used to give a
very flat frequency response below the minimum stable gain
for the OPA686, further improving its already exceptional
distortion performance. Using this compensation makes the
OPA686 one of the premier 12- to 14-bit analog-to-digital
converter input drivers. The supply current for the OPA686 is
precisely trimmed to 12.4mA at +25擄C. This, along with
carefully defined supply current tempcos in the input and
output stages, combine to provide exceptional performance
over the full specified temperature range.
OPA686 RELATED PRODUCTS
SINGLES
OPA643
OPA2686
OPA687
DUALS
INPUT NOISE
VOLTAGE (nV/
鈭?/div>
Hz)
2.3
1.3
0.95
GAIN BANDWIDTH
PRODUCT (MHz)
800
1600
3600
DESCRIPTION
The OPA686 combines very high gain bandwidth and large
signal performance with very low input voltage noise while
dissipating a low 12mA supply current. The classical differen-
tial input stage, along with two stages of forward gain and a
high power output stage, combine to make the OPA686 an
exceptionally low distortion amplifier with excellent DC accu-
racy and output drive. The voltage feedback architecture allows
all standard op amp applications to be implemented with very
high performance.
The combination of low input voltage and current noise, along
with a 1.6GHz gain bandwidth product, make the OPA686 an
ideal amplifier for wideband transimpedance stages. As a volt-
age gain stage, the OPA686 is optimized for a flat response at a
gain of +10 and is guaranteed stable down to a noise gain of +7.
+5V
Supply decoupling
not shown.
100pF
0.1碌F
50k鈩?/div>
100
95
20log (50k鈩? = 94dB鈩?/div>
20鈥og (Z
T
) 5dB/div
OPA686
V
O
90
85
80
75
70
65
位
I
S
10pF
Photodiode
鈥?V
50k鈩?/div>
0.2pF
鈥揤
B
60
0.1
1
10
Frequency (MHz)
100
High Gain, 20MHz Transimpedance Amplifier
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111 鈥?Twx: 910-952-1111
Internet: http://www.burr-brown.com/ 鈥?FAXLine: (800) 548-6133 (US/Canada Only) 鈥?Cable: BBRCORP 鈥?Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132
廬
漏
1997 Burr-Brown Corporation
1
PDS-1370D
OPA686
May, 2000
Printed in U.S.A.

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